Not in superproject

[ben-edna]

This new check in some cases leads to an issue that regular dest paths are not recognized as child folder.

dfetch/dfetch/project/superproject.py

Lines 66 to 69 in 6cf1a72

	if (
	os.path.commonprefix((pathlib.Path(path).resolve(), self.root_directory))
	!= self.root_directory
	):